// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_APP_LIST_VIEWS_TILE_ITEM_VIEW_H_
#define UI_APP_LIST_VIEWS_TILE_ITEM_VIEW_H_

#include "base/macros.h"
#include "base/strings/string16.h"
#include "third_party/skia/include/core/SkColor.h"
#include "ui/app_list/app_list_export.h"
#include "ui/app_list/views/image_shadow_animator.h"
#include "ui/views/controls/button/button.h"
#include "ui/views/controls/button/custom_button.h"

namespace gfx {
class ImageSkia;
}

namespace views {
class ImageView;
class Label;
}

namespace app_list {

// The view for a tile in the app list on the start/search page.
class APP_LIST_EXPORT TileItemView : public views::CustomButton,
                                     public views::ButtonListener,
                                     public ImageShadowAnimator::Delegate {
public:
    enum HoverStyle {
        HOVER_STYLE_ANIMATE_SHADOW,
        HOVER_STYLE_DARKEN_BACKGROUND,
    };

    TileItemView();
    ~TileItemView() override;

    bool selected() { return selected_; }
    void SetSelected(bool selected);

    // Informs the TileItemView of its parent's background color. The controls
    // within the TileItemView will adapt to suit the given color.
    void SetParentBackgroundColor(SkColor color);
    SkColor parent_background_color() { return parent_background_color_; }

    // Sets the behavior of the tile item on mouse hover.
    void SetHoverStyle(HoverStyle hover_style);

    // Overridden from views::CustomButton:
    void StateChanged() override;

    // Overridden from views::View:
    void Layout() override;

    // Overridden from ImageShadowAnimator::Delegate:
    void ImageShadowAnimationProgressed(ImageShadowAnimator* animator) override;

protected:
    void SetIcon(const gfx::ImageSkia& icon);

    void SetTitle(const base::string16& title);

private:
    void UpdateBackgroundColor();

    // Overridden from views::View:
    gfx::Size GetPreferredSize() const override;
    bool GetTooltipText(const gfx::Point& p,
        base::string16* tooltip) const override;

    SkColor parent_background_color_;
    HoverStyle hover_style_;
    scoped_ptr<ImageShadowAnimator> image_shadow_animator_;

    views::ImageView* icon_; // Owned by views hierarchy.
    views::Label* title_; // Owned by views hierarchy.

    bool selected_;

    DISALLOW_COPY_AND_ASSIGN(TileItemView);
};

} // namespace app_list

#endif // UI_APP_LIST_VIEWS_TILE_ITEM_VIEW_H_
